Solidworks isn’t that widely used outside of academia and small businesses though, Catia is Dassault’s pro product and Siemens has NX and another tool whose name escapes me.
It’s worth noting that Siemens licenses the CGM kernel from Dassault for some of their products too though. At least they used to when I worked there…
I think they don’t need to market them - but that’s because they’re aimed at a different market segment. The licensing costs for these tools individually are very high, but big companies buy them as a package along with things like TeamCenter. Inertia is very strong so if a company uses a tool, they’re unlikely to migrate unless they’re forced to for some reason.
